KR101922551B1 - Decoration element and preparing method thereof - Google Patents

Abstract

The present invention relates to a decoration member including: a light reflection layer; a light absorption layer prepared on the light reflection layer; and a color expression layer including a color film prepared on the light reflection layer on the opposite side of the surface facing the light absorption layer, disposed in between the light reflection layer and the light absorption layer, or prepared on the light absorption layer on the opposite side of the surface facing the light reflection layer. According to the present invention, multiple colors can be realized on a three-dimensional pattern as needed.

Description

TECHNICAL FIELD [0001] The present invention relates to a decorative member and a manufacturing method thereof.

The present invention relates to a decorative member and a manufacturing method thereof. Specifically, the present invention relates to a decorative member suitable for use in a mobile device or an electronic product, and a manufacturing method thereof.

Mobile phones, various mobile devices, and home appliances have a major role in designing products, such as color, shape, pattern, etc., of products other than the functions of products, to give value to customers. Depending on the design, the preference and price of the product are also influenced.

As an example, in the case of mobile phones, various colors and colors are implemented in various ways and applied to products. There is a method of attaching color to the case material of the mobile phone and attaching a decorative film of color and shape to the case material to give a design.

In the conventional deco film, color development was attempted through printing, deposition, and the like. If different colors are expressed on a single plane, they must be printed more than twice, and it is difficult to implement them when various colors are to be applied to a three-dimensional pattern. In addition, the conventional deco film has a fixed color depending on viewing angles, and even if there is a slight change, it is limited to the degree of color difference.

It is an object of the present invention to provide a decoration member which can easily realize various colors, can realize a plurality of colors in a three-dimensional pattern as required, and can provide a color change according to a viewing angle.

One embodiment of the present application includes a light reflecting layer; A light absorbing layer provided on the light reflecting layer; And a color film provided on a surface opposite to the surface of the light reflecting layer opposite to the light absorbing layer, between the light reflecting layer and the light absorbing layer, or on a surface opposite to the surface facing the light reflecting layer of the light absorbing layer The decorative member comprising a layer.

According to another embodiment of the present application, when the color film is present, the color film has L * a * a * b * on the chromaticity coordinates CIE L * a * b * of the color developing layer when compared with the case where the color film is not provided the color difference? E ^* ab, which is the distance in the space of * b *, exceeds 1.

According to another embodiment of the present application, a substrate is provided on the opposite surface of the light reflecting layer opposite to the light absorbing layer, or on the opposite surface of the light absorbing layer facing the light reflecting layer. When the substrate is provided on the opposite surface of the light reflecting layer opposite to the light absorbing layer and the color film is located on the opposite surface of the light reflecting layer opposite to the light absorbing layer, And the light reflecting layer, or the opposite surface of the substrate facing the light reflecting layer. When the substrate is provided on the opposite surface of the light absorbing layer opposite to the light reflecting layer and the color film is located on the opposite side of the light absorbing layer to the light reflecting layer, And the light absorbing layer, or the opposite surface of the substrate facing the light absorbing layer.

At this time, the color film may be provided in a state of being laminated with one sheet or two or more sheets of the same kind or different kinds.

According to another embodiment of the present application, the light absorbing layer includes two or more points having different thicknesses.

According to another embodiment of the present application, the light absorbing layer includes two or more regions having different thicknesses.

According to another embodiment of the present application, the light absorbing layer includes at least one region having an inclined surface whose upper surface has an inclination angle of more than 0 degrees and not more than 90 degrees, and the light absorbing layer has a thickness And at least one region having a thickness different from the thickness.

According to another embodiment of the present application, the light absorbing layer includes at least one region whose thickness gradually changes.

According to another embodiment of the present application, the light absorbing layer includes at least one region having an inclined surface whose top surface has an inclination angle of more than 0 degrees and not more than 90 degrees, and a region having at least one inclined surface, . ≪ / RTI >

According to another embodiment of the present application, the light absorption layer has an extinction coefficient (k) value of more than 0 and 4 or less at 400 nm.

According to another embodiment of the present application, the decorative member is a household article requiring a decorative film, a case of a mobile device, or an appliance case or color decoration.

According to the embodiments described herein, external light is absorbed in each of the incident path and reflection mirror upon reflection through the color-developing layer, and external light is reflected by the surface of the light-absorbing layer and the surface of the light- A constructive interference and a destructive interference phenomenon occur between the reflected light on the surface of the light absorption layer and the reflected light on the surface of the light reflection layer. A specific color can be expressed through the above-described incidence path and the phenomenon of light absorption, constructive interference, and destructive interference in the reflector path. Therefore, a specific color can be realized according to the reflectance spectrum and the composition of the light absorbing layer depending on the material of the light reflecting layer. In addition, since the color to be expressed has thickness dependency, the color can be changed according to the thickness even when the same material composition is used. In addition, by further providing a color film, even when the material and thickness of the light reflection layer and the light absorption layer are determined, the width of hue that can be realized can be further increased. The color change width due to the addition of the color film can be defined as a color difference (DELTA E ^* ab) which is a difference between L * a * b * before and after application of the color film. In addition, the light absorbing layer has two or more points or areas having different thicknesses on the same surface, so that a plurality of hues can be expressed. By forming a color expression layer on the three-dimensional pattern, various colors can be realized in a three-dimensional pattern.

In addition, when the upper surface of the light absorbing layer has at least one inclined surface, it is possible to realize a change in color developed according to the viewing angle, and in addition, the light absorbing layer can be manufactured to have two or more regions having different thicknesses by a simple process.

1 to 3 illustrate a laminated structure of decorative members according to embodiments of the present invention.
Fig. 4 is a schematic diagram for explaining the principle of the color-rendering action in the light reflection layer and the light absorption layer structure.
5 and 6 illustrate a laminated structure of decorative members according to embodiments of the present invention.
Figs. 7 to 10 illustrate the top surface structure of the light absorbing layer of the decorative member according to the embodiments of the present application.
11 to 14 illustrate a laminated structure of decorative members according to embodiments of the present invention.
Figs. 15 to 17 are diagrams showing that hue appears different depending on the thickness of the light absorbing layer. Fig.
18 and 19 show the light transmittance and the light reflectance of the color film used in the examples, respectively.
20 is a graph showing n and k values of aluminum oxynitride.
Fig. 21 shows the hue of decorative members manufactured in Comparative Examples 1 and 2 and Examples 1 and 2. Fig.
22 to 26 show the hue of the decorative member manufactured in Comparative Examples 3 to 6 and Examples 3 to 18.
Fig. 27 shows a cross-sectional structure of a PET substrate having dichroic patterns used in Examples 19 to 36 and Comparative Examples 7 and 8. Fig.
Fig. 28 shows the hue of the decorative member produced in Examples 19 to 27 and Comparative Examples 7 to 9. Fig.
Fig. 29 shows the hue of the decorative member produced in Examples 28 to 36 and Comparative Examples 10 to 12. Fig.
30 shows the hue of the decorative member produced in Example 37 and Comparative Example 13. Fig.

Hereinafter, the present invention will be described in detail.

As used herein, the term " point " means one position that does not have an area. In this specification, the above expression is used to indicate that there are two or more points where the thicknesses of the light absorbing layers are different from each other.

In this specification, " region " represents a portion having a certain area. For example, when the decorating member is placed on the ground so that the light reflecting layer is on the bottom and the light absorbing layer is on the top, and both ends of the inclined surface or both ends having the same thickness are vertically divided with respect to the ground, Refers to an area divided by both ends, and an area having the same thickness means an area divided by both ends having the same thickness.

In this specification, " face " or " region " may be plane, but not limited thereto, all or part may be curved. For example, the shape of the vertical cross section may include a structure of a circle, a part of an arc of an ellipse, a wave structure, and a zigzag structure.

In the present specification, the term " inclined surface " means a surface having an angle formed by the upper surface with respect to the ground when the decorative member is placed on the ground such that the light reflection layer is on the lower side and the light absorption layer is on the upper side. do.

In this specification, the "thickness" of any layer means the shortest distance from the lower surface to the upper surface of the layer.

In the present specification, the term " or " indicates the meaning of " and / or ", unless the context clearly dictates otherwise.

In the present specification, the term " layer " means that at least 70% of the area in which the layer is present is covered. , Preferably at least 75%, more preferably at least 80%.

According to one embodiment of the present application, the decorative member comprises a light reflection layer; A light absorbing layer provided on the light reflecting layer; And a color film provided on a surface opposite to the surface of the light reflecting layer opposite to the light absorbing layer, between the light reflecting layer and the light absorbing layer, or on a surface opposite to the surface facing the light reflecting layer of the light absorbing layer Layer. ≪ / RTI >

The color film has a color difference ΔE (L * a * b *) in the space of L * a * b * on the color coordinate CIE L * a * b * of the color developing layer in the presence of the color film, ^* Ab is not particularly limited as long as it exceeds 1.

이며, 0<ΔE^*ab<1의 범위 내에서는 관찰자가 색 차이를 인지할 수 없다[참고문헌: Machine Graphics and Vision 20(4):383-411]. 따라서, 본 명세서에서는 칼라필름의 추가에 따른 색차를 ΔE^*ab>1로 정의할 수 있다. The color representation can be expressed as CIE L * a * b *, and the color difference can be defined using the distance (ΔE ^* ab) in the L * a * b * space. Specifically,

, And the observer can not recognize the color difference within the range of 0 < DELTA E ^* ab < 1 (Reference: Machine Graphics and Vision 20 (4): 383-411). Therefore, in this specification, the color difference due to the addition of the color film can be defined as? E ^* ab> 1.

A light reflection layer 201, a light absorbing layer 301 and a color film 401 are sequentially laminated in FIG. 1 (a), a structure in which a light reflection layer 201, a color film 401, A structure in which the light absorbing layer 301 is sequentially laminated and a structure in which the color film 401, the light reflecting layer 201 and the light absorbing layer 301 are sequentially laminated in FIG. 1 (c).

The color film may serve as a substrate. For example, it can be used as a color film by adding a dye or pigment to what can be used as a substrate.

An opposite surface of the light reflection layer facing the light absorption layer; Or a substrate may be provided on the opposite side of the surface of the light absorbing layer opposite to the light reflection layer.

For example, when the substrate is provided on the opposite surface of the light reflecting layer opposite to the light absorbing layer, and the color film is located on the opposite surface of the light reflecting layer opposite to the light absorbing layer, Between the substrate and the light reflective layer; Or on the opposite surface of the substrate facing the light reflection layer. As another example, when the substrate is provided on the opposite surface of the light absorbing layer opposite to the light reflecting layer, and the color film is located on the opposite side of the light absorbing layer to the light reflecting layer, The color film being disposed between the substrate and the light absorbing layer; Or on the opposite surface of the substrate facing the light absorption layer.

According to another embodiment of the present application, a substrate is provided on the opposite surface of the light reflecting layer opposite to the light absorbing layer, and a color film is additionally provided. 2A shows a structure in which the color film 401 is provided on the opposite surface of the light absorbing layer 301 on the side of the light reflection layer 201. In FIG 2B, A structure in which a color film 401 is provided between the light reflection layer 201 and the substrate 101 and a structure in which a color film 401 is provided between the light reflection layer 201 and the substrate 101 is shown in FIG. And a film 401 is provided on the opposite surface of the substrate 101 on the light reflection layer 201 side. In FIG. 2E, the color films 401a, 401b, 401c and 401d are respectively disposed on opposite sides of the light absorbing layer 301 on the light reflecting layer 201 side, between the light absorbing layer 301 and the light reflecting layer 201, But the present invention is not limited thereto and the color films 401a, 401b, 401c, and 401c may be formed on the opposite surfaces of the reflective layer 201 and the substrate 101, 401d may be omitted.

According to another embodiment of the present application, a substrate is provided on the opposite surface of the light absorbing layer to the light reflecting layer, and a color film is additionally provided. 3 (a) shows a structure in which the color film 401 is provided on the opposite surface of the substrate 101 on the side of the light absorbing layer 301, and FIG. 3 (b) shows a structure in which the color film 401 is provided on the substrate 101 A structure in which a color film 401 is provided between the light absorbing layer 301 and the light reflecting layer 201 and a structure in which a color film 401 is provided between the light absorbing layer 301 and the light reflecting layer 201 is shown in FIG. (401) is provided on the opposite surface of the light reflection layer (201) on the side of the light absorption layer (301). 3E, color films 401a, 401b, 401c and 401d are respectively formed on opposite sides of the base 101 on the side of the light absorbing layer 301, between the base 101 and the light absorbing layer 301, The present invention is not limited thereto and the color films 401a, 401b, and 401c (not shown in the drawings) may be used as the light reflection layer 201 , And 401d may be omitted.

2 (b) and 3 (c), when the visible light transmittance of the color film is more than 0%, light incident through the color reflecting film can be reflected by the light reflecting layer. Therefore, Color can be realized.

In the structure shown in FIG. 2 (c), FIG. 2 (d), and FIG. 3 (d), in order to recognize the color difference due to the addition of the color film, It is preferable that the transmittance is 1% or more, preferably 3% or more, and more preferably 5% or more. This is because the transmitted light can be mixed with the color of the color film in the visible light transmittance range.

The color film may be provided in a state in which one sheet or two or more sheets of the same kind or different types are laminated.

The color film may be combined with the color developed from the above-described laminated structure of the light reflection layer and the light absorption layer to exhibit a desired color. For example, a color film may be used in which one or more of pigments and dyes are dispersed in the matrix resin to exhibit color. The color film may be formed by coating a composition for forming a color film directly at a position where the color film may be provided as shown in FIGS. 1 to 3, or may be formed by coating a composition for forming a color film on a separate substrate, , Extrusion, or the like, a color film may be manufactured, and then a color film may be disposed or adhered to a position where the color film may be provided, as shown in FIGS. 1 to 3. The coating method may be a wet coating or a dry coating.

The pigments and dyes that can be included in the color film may be selected from those known in the art as those capable of achieving a desired color from the final decorating material, and may be selected from red, yellow, purple, And pigments and dyes such as pigments, pigments, pigments, pigments, etc. Specific examples thereof include perinone red dyes, anthraquinone dyes, anthraquinone dyes, methine dyes, anthraquinone dyes, anthraquinone dyes, phthalocyanine dyes, thioindigo dyes, isoindigo dyes, Dyes such as isoxindigo-based pink dyes may be used alone or in combination. Carbon black, copper phthalocyanine (CI Pigment Blue 15: 3), C.I. Pigment Red 112, Pigment blue, and Isoindoline yellow may be used alone or in combination. Commercially available materials such as dyes or pigments may be used. For example, materials such as Ciba ORACET Co., Ltd. or Chohwa Paint Co., Ltd. can be used. The types of the dyes or pigments and their hue are merely examples, and known dyes or pigments can be used in various ways, thereby realizing more various colors.

As the matrix resin included in the color film, materials known as materials such as a transparent film, a primer layer, an adhesive layer, and a coating layer can be used, and the material is not particularly limited thereto. For example, a variety of materials such as an acrylic resin, a polyethylene terephthalate resin, a urethane resin, a linear olefin resin, a cycloolefin resin, an epoxy resin, and a triacetylcellulose resin may be selected. Mixtures may also be used.

When the color film is disposed closer to the position where the decorative member is viewed than the light reflection layer or the light absorption layer, for example, as shown in Figs. 2A, 2B, 3A, ), The color film has a light transmittance of not less than 1%, preferably not less than 3%, more preferably not less than 5%, which is expressed from the light reflection layer, the light absorption layer or the laminated structure of the light reflection layer and the light absorption layer desirable. Thus, hues expressed from the color film and the light reflected from the light reflecting layer, the light absorbing layer, or the laminated structure thereof can be combined together to achieve a desired color.

The thickness of the color film is not particularly limited and can be selected by a person having ordinary knowledge in the art as long as it can exhibit a desired color. For example, the thickness of the color film may be 500 nm to 1 mm.

According to the above-described embodiments, light is absorbed by the incident path of the light and the reflecting mirror in the light absorbing layer, and light is reflected from the surface of the light absorbing layer and the interface between the light absorbing layer and the light reflecting layer, . In this specification, light reflected at the surface of the light absorbing layer can be expressed as surface reflected light, and light reflected at the interface between the light absorbing layer and the light reflecting layer can be expressed as interface reflected light. Fig. 4 shows a schematic diagram of such a working principle. 4 shows a structure in which the substrate 101 is provided on the light reflection layer 201 side and the color film 401 is provided on the substrate 101. However, And the position of the substrate 101 may be arranged at different positions as described above.

According to another embodiment of the present application, when the light absorbing layer includes a pattern, the pattern may be a symmetric structure, an asymmetric structure, or a combination thereof.

According to one example, the light absorbing layer may include a pattern of a symmetric structure. The symmetric structure includes a prism structure, a lenticular lens structure, and the like.

5 and 6 show examples in which the light absorbing layer 301 has a pattern of a symmetrical structure. Fig. 5 shows a structure in which the base 101 is provided on the light reflection layer 201 side, and Fig. 6 shows a structure in which the base 101 is provided on the light absorption layer 301 side. 5 and 6, a pattern is provided on one surface of the base material 101, that is, a surface of the base material 201 which is in contact with the light reflection layer 201. [ Depending on the structure of the pattern, the light reflection layer 201 and the light absorption layer 301 have the same pattern. 5 and 6 show a pattern attached to the substrate 101, an integrated substrate having a pattern by a method of deforming one surface of the substrate into a pattern shape may be used. A pattern may be provided on a surface of the light reflecting layer 201 that is in contact with the light absorbing layer 301 or the light reflecting layer 201 may have a flat surface and may be a light reflecting layer, It is also possible to have a pattern only on the opposite side of the surface in contact with the substrate 201. 5 and 6 show a structure in which the color film 401 is provided on the substrate 101 side, between the substrate 101 and the pattern, on the light absorbing layer 301 side, or between the light absorbing layer 301 and the light reflecting layer 201 Are shown. However, the present invention is not limited thereto, and the color film 101 may be provided at two or more positions shown. According to another embodiment of the present application, the light absorbing layer may include a pattern of an asymmetric structure.

In the present specification, an asymmetric structure means that it has an asymmetric structure on at least one surface when viewed from the top, side or cross section. In the case of the asymmetric structure, the decorative member can exhibit dichroism. Dichroism means that different colors are observed depending on the viewing angle.

로 표현할 수 있으며, 보는 각도에 따른 색차가 ΔE^*ab>1인 경우 이색성이 있다고 정의할 수 있다. Dichroism is related to the above-mentioned color difference

And it can be defined that dichroism exists when the color difference according to viewing angle is ΔE ^* ab> 1.

According to one example, the light absorbing layer includes a pattern whose upper surface has a protruding portion or a groove portion in the form of a cone. The cone shape includes the shape of a cone, a cone, or a polygonal cone. Here, the shape of the bottom surface of a polygonal horn is triangular, square, and star shape with five or more protruding points. The cone shape may be in the form of a protrusion formed on the upper surface of the light absorbing layer or in the form of a groove formed on the upper surface of the light absorbing layer. The projecting portion is triangular in cross section, and the groove has an inverted triangular cross section. The lower surface of the light absorbing layer may have the same shape as the upper surface of the light absorbing layer.

According to one example, the cone-shaped pattern may have an asymmetric structure. For example, when the cone-shaped pattern is observed on the upper surface, when three or more identical shapes exist when the cone is rotated 360 degrees with respect to the vertex of the cone, dichroism is hardly expressed from the pattern. However, when the cone-shaped pattern is observed on the upper surface, dichroism can be expressed when there are two or less of the same shapes when the cone is rotated 360 degrees from the vertex of the cone. Fig. 7 shows a top view of a cone shape. Fig. 7 (a) shows a cone shape of a symmetric structure, and Fig. 7 (b) shows a cone shape of an asymmetric structure.

The cone shape of symmetrical structure is a structure in which the bottom face of the cone shape is a circle or regular polygon having the same length on each side and the vertex of the cone is on the vertical line of the center of gravity of the bottom face. However, when the cone shape of the asymmetric structure is observed on the upper surface, the position of the vertex of the cone is located on the vertical line of the point other than the center of gravity of the floor surface, or the polygonal or elliptical structure to be. When the bottom surface is a polygon having an asymmetric structure, at least one of the sides or angles of the polygon can be designed differently from the rest.

For example, as shown in Fig. 8, the position of the vertex of the cone can be changed. Specifically, when the vertex of the cone is located on the vertical line of the center of gravity (O1) of the bottom surface when observing from the top, as shown in the first figure of FIG. 8, (4 fold symmetry). However, the symmetry structure is broken by designing the vertex of the cone at the position O2 instead of the center of gravity O1 of the floor surface. The length of one side of the bottom surface is x, the moving distance of the vertex of the cone is a and b, the height of the cone shape, which is the length of the line vertically connecting the vertex (O1 or O2) A coincidence value can be obtained with respect to the plane 1, plane 2, plane 3 and plane 4 in Fig. 8 as follows.

At this time, since? 1 and? 2 are the same, there is no dichroism. However, θ3 and θ4 are different, and │θ3 - θ4│ refers to the color difference (E ^* ab) between the two colors, so that dichroism can be exhibited. Here, |? 3 -? 4 |> 0. Thus, the angle between the bottom surface and the side surface of the cone can be used to quantitatively indicate how the symmetry structure is broken, that is, the degree of asymmetry, and the numerical value indicating the degree of asymmetry is proportional to the color difference of the dichroism.

According to another example, the light absorbing layer includes a pattern in which the peak has a line-shaped protrusion or a bottom point has a line-shaped groove. The line shape may be a linear shape, a curved shape, or both a curve and a straight line. When a pattern having a line-shaped protrusion or groove is observed on the upper surface, it is difficult to exhibit dichroism when two or more of the same shapes are present when the center of gravity of the upper surface is rotated 360 degrees. However, when a pattern having a line-shaped protrusion or groove is observed on the upper surface, dichroism can be exhibited when there is only one identical shape when rotated 360 degrees from the center of gravity of the upper surface. Fig. 9 is a top view of a pattern having a line-shaped protrusion, wherein (a) illustrates a pattern having a line-shaped protrusion that does not exhibit dichroism, (b) As shown in Fig. 9A is an isosceles triangle or an equilateral triangle, and the Y-Y 'cross section of FIG. 9B is a triangle having side lengths different from each other.

According to another example, the light absorbing layer includes a pattern having a protruding portion or a groove portion whose upper surface is a cone-shaped upper surface cut-out structure. The cross-section of such a pattern may be trapezoidal or inverted trapezoidal. Also in this case, dichroism can be expressed by designing the top surface, the side surface, or the cross section to have an asymmetric structure.

Various protrusions or groove patterns as shown in FIG. 10 may be implemented in addition to the structures exemplified above.

According to another embodiment of the present application, the light absorbing layer may include two or more regions having different thicknesses.

Examples of the structure according to the above-described embodiment are shown in Figs. 11 and 12. Fig. 11 and 12 illustrate a structure in which a color film 401 is additionally provided in a structure in which a substrate 101, a light reflecting layer 201, and a light absorbing layer 301 are laminated. 11 and 12 illustrate a structure in which the substrate 101 is provided on the light reflection layer 201 side, but the present invention is not limited thereto. The substrate 101 may be provided on the light absorption layer 301 side. According to Figs. 11 and 12, the light absorbing layer 301 has two or more points having different thicknesses from each other. According to Fig. 11, the thicknesses of the light absorbing layer 301 at the points A and B are different. According to Fig. 12, the thickness of the light absorbing layer 301 in the C region and the D region is different. 11 and 12 show only one example in which one color film 401 is provided, however, two or more color films 401 may be provided.

According to another embodiment of the present application, the light absorbing layer includes at least one region having an inclined surface whose upper surface has an inclination angle of more than 0 degrees and not more than 90 degrees, and the light absorbing layer has a thickness And at least one region having a thickness different from the thickness.

The surface characteristics such as the inclination of the upper surface of the light reflecting layer may be the same as the upper surface of the light absorbing layer. For example, the upper surface of the light absorbing layer may have the same inclination as the upper surface of the light reflecting layer by using the vapor deposition method when forming the light absorbing layer.

Fig. 13 illustrates the structure of a decorative member having a light absorbing layer having an inclined surface on an upper surface. The thickness t1 of the light absorbing layer 301 in the E region and the thickness t2 in the F region are different from each other in the structure in which the color film 401, the substrate 101, the light reflecting layer 201 and the light absorbing layer 301 are laminated .

Fig. 13 relates to a light absorbing layer having a sloped surface facing each other, that is, a triangular section. As shown in FIG. 13, the thickness of the light absorbing layer may be varied on two surfaces of the triangular structure even if deposition proceeds under the same conditions in the structure of the pattern having the inclined surfaces facing each other. As a result, a light absorbing layer having two or more regions having different thicknesses can be formed by only one step. Thus, the color hue differs depending on the thickness of the light absorbing layer. At this time, if the thickness of the light reflecting layer is more than a predetermined value, the color change is not affected.

13 shows a structure in which the substrate 101 is provided on the light reflection layer 201 side and the color film 401 is provided on the substrate 101 side. And the position of the substrate 101 may be arranged at different positions as described above. 13 has a flat surface in contact with the light reflecting layer 201 and a surface of the base 101 in contact with the light reflecting layer 201 is a pattern having the same slope as the top surface of the light reflecting layer 201 Lt; / RTI &gt; In this case, the difference in the thickness of the light absorbing layer may also be caused by the difference in the inclination of the pattern of the base material. However, the present invention is not limited thereto, and the thickness of the light absorbing layer may be different on both sides of the pattern, so that the above-described dichroism can be exhibited even if the substrate and the light absorbing layer have different inclination using another vapor deposition method.

According to another embodiment of the present application, the light absorbing layer includes at least one region whose thickness gradually changes. According to Fig. 11, a structure in which the thickness of the light absorbing layer gradually changes is illustrated.

According to another embodiment of the present application, the light absorbing layer includes at least one region having an inclined surface whose top surface has an inclination angle of more than 0 degrees and not more than 90 degrees, and a region having at least one inclined surface, . &Lt; / RTI &gt; Fig. 14 illustrates the structure of a light absorbing layer including a region having a sloped upper surface. In both the G region and the H region in Fig. 14, the upper surface of the light absorbing layer has an inclined surface, and the thickness of the light absorbing layer gradually changes.

According to an example, the light absorbing layer may include a first region having a first inclined plane whose inclination angle is within a range of 1 to 90 degrees, and an upper face may be inclined differently from the first inclined plane, Or a second area whose top surface is horizontal. At this time, the thickness of the light absorbing layer in the first region and the second region may be different from each other.

According to another example, the light absorbing layer may include a first region having a first inclined face whose inclination angle is within a range of 1 to 90 degrees, and the upper face may be different from the first inclined face in inclination direction, And may further include two or more regions having an inclined plane or a top plane. At this time, the thicknesses of the light absorbing layers in the first region and the two or more regions may be different from each other.

The light absorption layer can be implemented in various colors according to the refractive index (n), the extinction coefficient (k), and the thickness (t). FIG. 15 shows the reflectance according to the wavelength depending on the thickness of the light absorbing layer, and FIG. 16 shows the hue realized according to the thickness of the light absorbing layer. Specifically, FIG. 9 is a graph of reflectance simulation by CuO deposition thickness of CuO / Cu, which is prepared by changing the thickness of CuO by 10 to 60 nm under the same deposition conditions.

17 is a simulation result showing that a different color is observed according to the viewing angle. 17 shows a simulation result of CuON / Al. In Fig. 17, the thickness of the light absorbing layer is increased from 10 nm to 10 nm by 10 nm, and the incident angle is adjusted from 15 degrees to 0 degrees from 60 degrees. From the simulation results, it can be seen that various colors can be realized by adjusting the thickness of the light absorbing layer and the inclination angle of the upper surface in the structure according to the embodiment of the present application. In addition, by providing a color film, more various colors can be realized.

The light reflecting layer is not particularly limited as long as it is a material capable of reflecting light, but the light reflectance can be determined depending on the material, and for example, the color can be easily realized at 50% or more. The light reflectance can be measured using an ellipsometer.

The light absorption layer preferably has a refractive index (n) of 0 to 8 at 400 nm, may be 0 to 7, may be 0.01 to 3, and may be 2 to 2.5. The refractive index n can be calculated as sin? 1 / sin? 2 (? 1 is the angle of light incident from the surface of the light absorption layer, and? 2 is the refraction angle of light within the light absorption layer).

The light absorption layer preferably has a refractive index (n) of 0 to 8 at 380 to 780 nm, may be 0 to 7, may be 0.01 to 3, and may be 2 to 2.5.

The light absorption layer preferably has an extinction coefficient (k) of more than 0 and less than 4 at 400 nm, preferably 0.01 to 4, may be 0.01 to 3.5, may be 0.01 to 3, and may be 0.1 to 1. The extinction coefficient k is a value obtained by multiplying the reduction ratio dI / I of the intensity of light per unit length (dx), e.g., 1 m, in the light absorbing layer by? / 4? , Where lambda is the wavelength of light.

The light absorption layer preferably has an extinction coefficient (k) of more than 0 and less than 4, preferably 0.01 to 4, more preferably 0.01 to 3.5, more preferably 0.01 to 3, and more preferably 0.1 to 1 at 380 to 780 nm.

Since the extinction coefficient (k) in the entire visible wavelength range of 400 nm, preferably 380 to 780 nm is in the above range, it can act as a light absorbing layer within the visible light range.

For example, when a method of absorbing light by adding a dye to a resin is used, and when a material having the extinction coefficient as described above is used, the spectrum that absorbs light differs. When a dye is added to a resin to absorb light, the absorption wavelength band is fixed and only the absorption amount changes depending on the change in coating thickness. Further, in order to obtain a desired light absorption amount, a thickness variation of at least several micrometers is necessary in order to adjust the light absorption amount. On the other hand, in the case of a material having an extinction coefficient, the wavelength range of light to be absorbed varies even if the thickness changes to several tens or nanometers scale.

According to one embodiment, the light reflecting layer may be a metal layer, a metal oxide layer, a metal nitride layer, a metal oxynitride layer, a carbon or carbon composite layer, or an inorganic layer. The light reflection layer may be formed of a single layer, or may be composed of two or more layers.

For example, the light reflecting layer may include at least one of indium (In), titanium (Ti), tin (Sn), silicon (Si), germanium (Ge), aluminum (Al), copper (Cu), nickel (Ni) V, tungsten, tantalum, molybdenum, neodymium, iron, chromium, cobalt, gold and silver. May be a single layer or multiple layers including one or more materials selected from the group consisting of one or more materials, oxides, nitrides or oxynitrides thereof, and carbon and carbon composites. For example, the light reflecting layer may comprise two or more alloys selected from the above materials, oxides thereof, nitrides or oxynitrides, and more specifically may include molybdenum, aluminum or copper. According to another example, the light reflection layer may be manufactured using an ink including a carbon or carbon composite, thereby realizing a high-resistance reflection layer. Examples of the carbon or carbon composite include carbon black and CNT. The ink containing the carbon or carbon composite material may include the above-described materials or oxides, nitrides or oxynitrides thereof, and examples thereof include indium (In), titanium (Ti), tin (Sn), silicon (Si) Ge). Aluminum, aluminum, copper, nickel, vanadium, tungsten, tantalum, molybdenum, neodymium, iron, chromium, One or more oxides selected from cobalt (Co), gold (Au), and silver (Ag) may be included. After the ink containing the carbon or carbon composite is printed, a curing process may be further performed.

When the light reflection layer includes two or more kinds of materials, two or more kinds of materials may be formed by one process, for example, a deposition or printing method. However, after the first layer is formed of at least one material, A method of forming a layer thereon with one or more kinds of materials may be used. For example, after depositing indium or tin to form a layer, an ink containing carbon may be printed and cured to form a light reflection layer. The ink may further include an oxide such as titanium oxide or silicon oxide.

According to one embodiment, the light absorbing layer may be a single layer, or may be a multilayer of two or more layers. The light absorbing layer may be made of a material having an extinction coefficient (k) at 380 to 780 nm, that is, a material having an extinction coefficient of more than 0 and 4 or less, preferably 0.01 to 4. For example, the light absorbing layer may include one or two or more selected from the group consisting of metals, metalloids, and oxides, nitrides, oxynitrides and carbides of metals or metalloids. The oxide, nitride, oxynitride or carbide of the metal or metalloid can be formed by deposition conditions set by a person skilled in the art. The light absorbing layer may contain the same metal, semi-metal, two or more alloys or oxynitrides as the light reflecting layer.

For example, the light absorption layer may be formed of indium (In), tin (Sn), silicon (Si), germanium (Ge), aluminum (Al), copper (Cu), nickel (Ni), vanadium (V), tungsten , Tantalum (Ta), molybdenum (Mo), neodymium (Nb), titanium (Ti), iron (Fe), chromium (Cr), cobalt (Co) Or a single layer or multiple layers comprising two or more materials or oxides, nitrides or oxynitrides thereof. As a specific example, the light absorbing layer includes one or two or more selected from among copper oxide, copper nitride, copper oxynitride, aluminum oxide, aluminum nitride, aluminum oxynitride and molybdenum titanium oxynitride.

According to one example, the light absorbing layer comprises silicon (Si) or germanium (Ge).

The light absorbing layer made of silicon (Si) or germanium (Ge) has a refractive index (n) of 0 to 8 at a wavelength of 400 nm and can be 0 to 7 and an extinction coefficient (k) 4, 0.01 to 3, or 0.01 to 1.

According to another example, the light absorbing layer includes one or two or more selected from among copper oxide, copper nitride, copper oxynitride, aluminum oxide, aluminum nitride, aluminum oxynitride and molybdenum titanium oxynitride. In this case, the light absorbing layer may have a refractive index (n) of 1 to 3, for example, 2 to 2.5 at 400 nm, and an extinction coefficient (k) of more than 0 to 4, preferably 0.01 to 2.5, More preferably, it may be 0.2 to 0.6.

According to one example, the light absorbing layer is AlOxNy (x> 0, y> 0).

According to another example, the light absorbing layer may be AlOxNy (0? X? 1.5, 0? Y? 1).

According to another example, the light absorbing layer is made of AlOxNy (x> 0, y> 0), and the number of each atom satisfies the following formula with respect to 100% of the total number of atoms.

According to one embodiment, the light absorbing layer may be made of a material having an extinction coefficient k at 400 nm, preferably 380 to 780 nm. For example, the light absorbing layer / light reflecting layer may be made of CuO / Cu, CuON / / Al, AlON / Al, AlN / AL / AlON / Cu, and AlN / Cu.

According to one embodiment, the thickness of the light reflection layer can be determined according to a desired color in the final structure, and is, for example, 1 nm or more, preferably 25 nm or more, such as 50 nm or more, preferably 70 nm or more.

According to one embodiment, the thickness of the light absorbing layer may be 5 to 500 nm, for example 30 to 500 nm.

According to one embodiment, the thickness difference of the light absorbing layer in each region is 2 to 200 nm and can be determined according to a desired color difference.

According to one embodiment, the light reflection layer may further include a substrate provided on a lower surface of the light reflecting layer or on an upper surface of the light absorbing layer. The surface characteristics such as the inclination of the upper surface of the substrate may be the same as the upper surface of the light reflection layer and the light absorption layer. This is because the light reflecting layer and the light absorbing layer are formed by the vapor deposition method, so that the substrate, light reflecting layer and light absorbing layer can have inclined surfaces at the same angle. For example, such a structure can be realized by forming an inclined surface or a three-dimensional structure on an upper surface of a substrate, depositing a light reflecting layer and a light absorbing layer on the substrate sequentially, or sequentially depositing a light absorbing layer and a light reflecting layer.

According to one example, forming a sloped surface or a three-dimensional structure on the surface of the substrate can be carried out by forming a pattern on the ultraviolet curable resin and curing it by using ultraviolet rays, or by laser processing. According to one embodiment, the decorative member may be a case of a deco film or a mobile device. The decorative member may further include an adhesive layer as needed.

The material of the substrate is not particularly limited, and when forming a sloped surface or a steric structure in the above-described manner, a UV-curable resin known in the art can be used.

A protective layer may be further provided on the light absorption layer.

According to one example, the adhesive layer may be further provided on the opposite surface of the substrate having the light absorbing layer or the light reflecting layer. This adhesive layer may be an optically clear adhesive (OCA) layer. On the adhesive layer, a release liner may be additionally provided for protection if necessary.

Although the present specification refers to a deposition such as a sputtering method as an example of a method of forming a light reflecting layer and a light absorbing layer, it is possible to apply various methods of manufacturing a thin film if the structure and characteristics according to the embodiments described herein can be obtained Do. For example, vapor deposition, chemical vapor deposition (CVD), or wet coating may be used.

Hereinafter, the present invention will be described in more detail by way of examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

Example  1 and 2

A blue color film was formed by a wet coating process on a solution of a blue pigment dispersed on a PET substrate. In order to confirm the physical properties of the formed color film, the values of light transmittance and light reflectance measured in the structures shown in Figs. 18 and 19 are shown in Figs. 18 and 19. Fig. Nitrogen was added thereto, and AlON (Al 58 at%, O 3.5 at%, N 38.5 at%) light absorbing layer was formed by reactive sputtering. In this case, the thickness of the light absorbing layer was about 40 nm in Example 1, and the thickness of the light absorbing layer was about 80 nm in Example 2. Al was deposited on the light absorption layer by a sputtering method to form a light reflection layer (Al, thickness 120 nm). For reference, the n and k values of the aluminum oxynitride are as shown in Fig.

Comparative Example  1 and 2

관찰자를 기준으로 하였다 . The procedure of Example 1 was repeated except that the color film was not laminated. The hue of the decorative film produced in Comparative Examples 1 and 2 and Examples 1 and 2 is shown in Fig. Color was calculated using reflectance (SCI, Specular Component Included) measured in a visible light area measured with a CM-2600d instrument of Konica Minolta. Concrete color conversion conditions are D65 light source, 10

The observer was used as a reference.

According to FIG. 21, it can be seen from comparison between Example 1 and Comparative Example 1 and Example 2 and Comparative Example 2 that color difference? E ^* ab exceeded 1 due to lamination of color films, and the composition and thickness of the light absorbing layer It can be seen that a desired color can be produced by adding a color film even in the same case.

Comparative Example  3

Al was deposited on the glass by a sputtering method to form a light reflection layer (Al, thickness 120 nm), nitrogen was added thereto, and AlON (Al 58 at%, O 3.5 at% N 38.5at%) light absorbing layer was formed. In Comparative Example 3, the thickness of the light absorbing layer was set to 10 kinds of thicknesses at intervals of 10 nm from 10 nm to 100 nm. The hue of the decorative member thus obtained was calculated as in Example 1 through air, and the results are shown in Fig.

Comparative Example  4

Comparative Example 3 was carried out except that a light absorbing layer of AlON (Al 58 at%, O 3.5 at%, N 38.5 at%) was formed on glass and then a light reflecting layer (Al, thickness 120 nm) Respectively. The color of the decorative member obtained from this was calculated as in Example 1 through glass, and the result is shown in Fig.

Comparative Example  5

The same procedure as in Comparative Example 3 was carried out except that the thickness of the light absorbing layer was changed from 120 nm to 300 nm to 10 kinds of thickness at intervals of 10 nm. The hue of the decorative member thus obtained was calculated as in Example 1 through air, and the results are shown in Fig.

Comparative Example  6

And the thickness of the light absorbing layer was changed from 120 nm to 300 nm to 10 kinds of thicknesses at intervals of 10 nm. The color of the decorative member obtained from this was calculated as in Example 1 through glass, and the result is shown in Fig.

Example  3 to 6

Examples 3 and 5 were carried out in the same manner as in Comparative Examples 3 and 5 except that a red color film was formed by a wet coating process of a solution in which a red pigment was dispersed on a light absorption layer. Examples 4 and 6 were carried out in the same manner as in Comparative Examples 4 and 6 except that a red color film was formed by a wet coating process on a solution in which red pigment was dispersed on glass before forming a light absorbing layer Respectively. In order to confirm the physical properties of the formed color film, the values of light transmittance and light reflectance measured in the structures shown in Figs. 18 and 19 are shown in Figs. 18 and 19. Fig. The hue visually observed through the air of the decorative members of Examples 3 and 5 and the hue visually observed through the glass of the decorative members of Examples 4 and 6 were calculated as in Example 1, Respectively.

Example  7 to 10

Examples 7 to 10 were carried out in the same manner as in Examples 3 to 6, except that a blue color film was used instead of the red color film. At this time, the blue color film was the same as in Example 1. The colors visually observed through the air of the decorative members of Examples 7 and 9 and the glass of the decorative members of Examples 8 and 10 were calculated as in Example 1 and the results are shown in Fig. Respectively.

Example  11-14

Examples 11 to 14 were carried out in the same manner as in Examples 3 to 6 except that a gold color film was used in place of the red color film. In order to confirm the physical properties of the formed color film, the values of light transmittance and light reflectance measured in the structures shown in Figs. 18 and 19 are shown in Figs. 18 and 19. Fig. The colors visually observed through the air of the decorative members of Examples 11 and 13 and the glass of the decorative members of Examples 12 and 14 were calculated as in Example 1 and the results are shown in Figure 25 .

Example  15 to 18

Examples 15 to 18 were carried out in the same manner as in Examples 3 to 6 except that an orchid color film was used in place of the red color film. In order to confirm the physical properties of the formed color film, the values of light transmittance and light reflectance measured in the structures shown in Figs. 18 and 19 are shown in Figs. 18 and 19. Fig. The colors visually observed through the air of the decorative members of Examples 15 and 17 and the glass of the decorative members of Examples 16 and 18 obtained therefrom were calculated as in Example 1 and the results are shown in Figure 26 .

22 to 26, it was confirmed that the color difference ΔE ^* ab exceeded 1 by the lamination of the color films in the examples in which the color film was applied. Compared with the comparative examples, It can be understood that a desired color can be produced by adding color films of various colors.

Example  19 to 21

A decorative member including a red color film was prepared in the same manner as in Example 3, except that glass having a dichroic pattern as shown in Fig. 27 was used instead of plate glass. Fig. 28 shows the result of calculation of hue visually recognized through the air of the decorative member manufactured in these examples as in Example 1. Fig. At this time, the thickness of the light absorbing layer on the side seen at the low angle and the thickness at the side seen at the high angle were 30 nm and 10 nm, respectively, and Example 20 was 80 nm and 30 nm, respectively, And 140 nm / 50 nm, respectively.

Example  22 to 24

A decorating member including a blue color film was prepared as in Example 7, except that glass having a dichroic pattern as shown in Fig. 27 was used instead of flat glass. Fig. 28 shows the result of calculation of hue visually recognized through the air of the decorative member manufactured in these examples as in Example 1. Fig. At this time, the thickness of the light absorbing layer on the side seen at the low angle and the thickness at the side seen at the high angle were 30 nm and 10 nm, respectively, Example 23 was 80 nm and 30 nm, respectively, 140 nm and 50 nm, respectively.

Example  25 to 27

A decorating member including a gold color film was produced in the same manner as in Example 11 except that glass having a dichroic pattern as shown in Fig. 27 was used instead of flat glass. Fig. 28 shows the result of calculation of hue visually recognized through the air of the decorative member manufactured in these examples as in Example 1. Fig. At this time, the thickness of the light absorbing layer on the side seen at the low angle and the thickness at the side seen at the high angle were 30 nm and 10 nm, respectively, and Example 26 was 80 nm and 30 nm, respectively, 140 nm and 50 nm, respectively.

Comparative Example  7 to 9

A decorative member was manufactured as in Examples 19 to 21 except that a color film was not added, and the hue visually recognized through the air of the decorative member was calculated as in Example 1, and the result is shown in Fig. According to FIG. 28, it was confirmed that the color difference ΔE ^* ab exceeded 1 due to the lamination of the color films. Even if the composition and thickness of the light absorption layer are the same, it is possible to produce a desired color by adding color films of various colors Able to know.

Example  28 to 30

A decoration member including a red color film was prepared as in Example 4 except that glass having a dichroic pattern as shown in Fig. 27 was used instead of plate glass. FIG. 29 shows the result of calculation of hue visually observed through the glass of the decorative member manufactured in these examples as in Example 1. FIG. At this time, the thickness of the light absorbing layer on the side seen at the low angle and the thickness at the side seen at the high angle were 30 nm and 10 nm, respectively, Example 29 was 80 nm and 30 nm, 140 nm and 50 nm, respectively.

Example  31 to 33

A decorative member including a blue color film was prepared as in Example 8, except that glass having a dichroic pattern as shown in Fig. 27 was used instead of plate glass. FIG. 29 shows the result of calculation of hue visually observed through the glass of the decorative member manufactured in these examples as in Example 1. FIG. In this case, the thickness of the light absorbing layer on the side seen in the low angle and the thickness on the side seen in the high angle were 30 nm and 10 nm, respectively, and Example 32 was 80 nm and 30 nm, respectively, 140 nm and 50 nm, respectively.

Example  34 to 36

A decorating member including a gold color film was produced in the same manner as in Example 12 except that glass having a dichroic pattern as shown in Fig. 27 was used instead of flat glass. FIG. 29 shows the result of calculation of hue visually observed through the glass of the decorative member manufactured in these examples as in Example 1. FIG. At this time, the thickness of the light absorbing layer on the side seen at the low angle and the thickness at the side seen at the high angle were 30 nm and 10 nm, respectively, and Example 35 was 80 nm and 30 nm, respectively, 140 nm and 50 nm, respectively.

Comparative Example  10 to 12

A decorative member was manufactured in the same manner as in Examples 28 to 30 except that no color film was added, and the hue visually recognized through the air of the decorative member was calculated as in Example 1, and the result is shown in Fig. According to FIG. 29, it was confirmed that the color difference ΔE ^* ab exceeded 1 due to the lamination of the color film. Even if the composition and thickness of the light absorption layer are the same, it is possible to produce a desired color by adding color films of various colors Able to know.

Example  37

A blue color film as in Example 1 was formed on glass having a dichroic pattern as shown in Fig. 27, and then an aluminum oxynitride layer was formed as a light absorbing layer by reactive sputtering deposition. The base pressure was 3 × 10 ^-6 Torr, the process pressure was 3 mTorr, the deposition process was performed under vacuum conditions, the Ar gas was adjusted to 100 sccm, and the reactive gas N ₂ was adjusted to 14 sccm. An aluminum layer was deposited as a light reflection layer to a thickness of 100 nm on the light absorption layer. FIG. 30 shows the result of comparing the hues observed through the thus-formed decorative member with glass.

Comparative Example  13

The procedure of Example 37 was repeated except that a blue color film was not formed. FIG. 30 shows the result of comparing the hues observed through the thus-formed decorative member with glass.

30, the color difference between High Angle and Low Angle in Comparative Example 13 was E * ab = 9.88, and the color difference between High Angle and Low Angle in Example 37 was E * ab = 8.99. It was confirmed that the dichroic property of the decorative member of Comparative Example 13 was maintained and the color indicated by the high angle and low angle could be adjusted by adding a blue color film.

Claims (18)

A light reflection layer; A light absorbing layer provided on the light reflecting layer; And a color film provided on a surface opposite to the surface of the light reflecting layer opposite to the light absorbing layer, between the light reflecting layer and the light absorbing layer, or on a surface opposite to the surface facing the light reflecting layer of the light absorbing layer Layer,
The color difference? E ^* ab, which is the difference in L * a * b * on the color coordinate CIE L * a * b * of the color reproduction layer when the color film is present compared to the case where the color film is not present Lt; RTI ID = 0.0 &gt; 1. &Lt; / RTI &gt; delete The color filter according to claim 1, wherein a substrate is provided on the opposite surface of the light reflecting layer opposite to the light absorbing layer, and the color film is disposed between the substrate and the light reflecting layer, or opposite to the light reflecting layer Wherein the decorative member is provided on the surface. The color filter according to claim 1, wherein a substrate is provided on the opposite surface of the light absorbing layer opposite to the light reflecting layer, and the color film is provided between the substrate and the light absorbing layer, or opposite to the light absorbing layer Wherein the decorative member is provided on the surface. The decorative member according to claim 1, wherein the color film is in a state of being laminated with one sheet or two or more sheets of the same or different types. The decorative member according to claim 1, wherein the light absorbing layer includes two or more points having different thicknesses. The light absorbing layer according to claim 1, wherein the light absorbing layer has at least one region having an inclined surface whose top surface has an inclination angle of more than 0 degrees and not more than 90 degrees, and the light absorbing layer has a region having a thickness different from that of the region having any one of the inclined surfaces Wherein the decorative member comprises at least one decorative member. The decorative member according to claim 1, wherein the light absorbing layer has a dichroic property of DELTA E ^* ab > The light-absorbing layer according to claim 1, wherein the upper surface of the light absorbing layer is a pattern having a protrusion or groove portion in the form of a cone, a pattern in which the peak has a line-shaped protrusion or a bottom- Wherein the decorative member comprises a pattern having protrusions or recesses. The decorative member according to claim 9, wherein the pattern having protrusions or grooves in the cone shape has two or less identical shapes when rotated 360 degrees with respect to the vertex of the cone when the cone-shaped pattern is viewed from above. . The pattern according to claim 9, wherein the pattern having the line-shaped projecting portion or the low-point linear-shaped groove portion has a single shape when rotated at 360 degrees with respect to the center-of- absence. The decorative member according to claim 1, wherein the light absorbing layer has a refractive index of 0 to 8 at 380 to 780 nm. The decorative member according to claim 1, wherein the light absorbing layer has an extinction coefficient of more than 0 and 4 or less at 400 nm. The light reflection layer according to claim 1, wherein the light reflection layer is formed of a material selected from the group consisting of indium (In), titanium (Ti), tin (Sn), silicon (Si), germanium (Ge), aluminum (Al), copper (Cu) (V), tungsten (W), tantalum (Ta), molybdenum (Mo), neodymium (Nb), iron (Fe), chromium (Cr), cobalt Wherein the decorative member is a single layer or a multilayer including one or more materials selected from the group consisting of oxides, nitrides or oxynitrides, carbon and carbon composites thereof. The light absorption layer according to claim 1, wherein the light absorption layer is formed of one of indium (In), titanium (Ti), tin (Sn), silicon (Si), germanium (Ge), aluminum (Al), copper (Cu) (V), tungsten (W), tantalum (Ta), molybdenum (Mo), neodymium (Nb), iron (Fe), chromium (Cr), cobalt Or nitride or oxynitride thereof, or a single layer or multilayer comprising one or more of the above-mentioned materials or oxides, nitrides or oxynitrides thereof. delete The decorative member according to claim 1, wherein the light absorbing layer includes two or more asymmetrical patterns having an inclined surface having an inclination angle within a range of 1 to 90 degrees and an inclined surface having an inclination angle different from the inclined surface. The decorative member according to any one of claims 1, 3 to 15 and 17, wherein the decorative member is a case of a decorative film or a mobile device.

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